I want to have access to ViewData inside layout.liquid

[abdulrahmannady]

as you can seed if I have an option on ViewData[Fmt.IsFluid] is true I want to render body inside container-fluid bootstrap class

[abdulrahmannady]

this could be don using HtmlContext.Items like this snippet
this on layout.liquid

this on razor page class

[hishamco]

You are using HtmlContext.Items not ViewData

[ns8482e]

It's not ViewData - The selected answer is not related to the question being asked